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benefits of running catless?

papaspanky

New member
I picked up a 3" catless downpipe for a dope @ work who has not stated he can not pay me for it. My question is what are the benefits (if any? I know in the old days the pellet type cats were extremely restrictive) of running without a cat? I have a 3" catted downpipe on my car now?
 


Benefits? That depends on what you think a benefit is.
~+2HP
Louder
Cheaper than buying it with cat
Requires tuning for rear O2
 


What they said:

You can't get a clogged cat if it isn't there
You let the engine breath a bit more so +2-3 hp
Less weight by 3-4 lbs.
Cheaper
Piss off people in Prius's or is that Prii?
 
Catless means nothing other than blacker exhaust tips.

Infact, dropping the cat nets you no power gains (unless it is clogged) and actually hardly anymore noise with a totally stock catback.
 
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